Routing mechanism



\ July17, 1923. 1,462,234

E. A. LAUGHLIN ROUTING MECHANISM Filed Nov. 1v 1922 2 sheets-'sheet 1 l F lllllllll July 17, 1923. 1,462,234

ROUTING MECHANISM Filed Nov. 17 1922 2 Sheets-Sheet 2 miras srarss 'Pari-:NT f o FFICE.

EDWARD A. LAUGHLIN, OF` PORT ARTHUR, TEXAS..

ROUTING MECHANISM.

Application filed Norv`ember 17, 1922. Serial No. 601,577.

-T0f all whomy t may concern:

Be it known that l, EDWARD A. LAUGHLIN, a citizen of thek United States, residing at Port Arthur, in the county of Jeerson and State of Texas, have invented a new and useful mprovement in Routing Mechanism, of which the following is a specification.

This invention relates to improvements in routing mechanism', and more especially to a routing mechanism adapted for cutting v grooves or depressions in the surface of material, such as dadoes,` mortises, and the like. My mechanism is so constructed that such grooves or depressions may be cut in a great variety of different shapes. Also, they may be undercut or` tapered, as desired,sorv

may be 'madeslanting or straight. A great v-variety of grooves or depressions may be made by adjustingy the mechanism as desired. y mechanism is also so constructed that it `may be readily and quickly attached to a saw machine of any ordinary construction, thus transforming said sawing machine into a routing machine adapted to cutgrooves or depressions in the surface of material in a great yvariety yof forms. Othervfeatures and advantages of my invention will appear more fully as l proceed with myspecification.

A deviceembodying the features of my inventionk is shown in the accompanying drawings, in Vwhich* F igurel 1 is a top plan view of one end of-a saw machine, showing Fig. 2 is a View taken asindicated by the line 2 of Fig. 1, Fig. 3 is a view in end elevation, and Fig. 4 isa view taken as indicated by the line L1V of Fig. 1 on an enlarged scale. As shown in the drawings, 10 indicates, in

general, the frame of a saw machine of comor guides 15, on which is mounted a carriage 16 provided with rollers 16a, thus'adapting -it` for. reciprocating longitudinal sliding movement on said tracks. The carriage 16 `shaft 33 `suitably driven.

. table for the purpose of place or alinement.

the table section 11a are provided two tracks kconstruction of the routing mechanism. This rotatably mounted therein a mandrel A18. The

20. The carriage 16 is provided with a downwardlyprojecting arm 23, attached by means of the link 2-titothe long arm of. a bell crank lever 25. The short arm of this bell crank lever is attached bymeans of a link 26 to a long horizontal lever 27 pivoted at 28 and` provided at its free end'` with a pedal 29. f The belt 19, below the pulley 20, is passed over the two idler pulleys 30 and 31 (see Fig. 3) and thence passediover the pulley 32, which is mounted on the power The idler wheels 30vand 31 are carried by an y pivoted at 36 and suitablyv weightedin order to keep asucient tension on the belt 19. It will be seen that, by this construction, downwardipressure on the pedal 29 will serve to advance the carriage 16. A suitable weight 40 isprovided for the vpurpose of withdrawing the carriage. The vparts heretofore deln such saw machines, the shaft l8r-carries a circular saw, having its cutting edge projecting upwardly `throughy the slot 12 between the table sections, so that it williop erate on work laid on the table. By means of the pedal 29, the carriage 16'may be given reciprocating motion, vthus moving the saw -backward and -forward in the slot 12. my routing `rr'iechanism attached thereto,

In the drawingsl have not shownthe circular saw on the arbor 18, as this is removed before my routing mechanism is attached.

vMy routing mechanism is mounted on the shaft 18, as shown in the drawings, and is provided with two routing tools orcutters I will now` describe more in detail the routing mechanism comprises a substantially cylindrical casing formedof two sections and 60a, suitably bolted together as indicated at 601.l This cylindrical casing driven by a belt 19 operating on the pulley arm 35, which is i scribed serve to illustrate the substantial construction of an ordinary saw@ machine.

has housed within it a bevel gear 6l which is attached to the arbor 18 in any suitable manner, such as by means of a key 62. The upper part of the casing 60 has rotatably mounted thereon an elongated casing 65, a. This casing is formed of two sections 65 and 65, suitably bolted together as indicated at 65h. Mounted within the casingy 65, 65 is a vertically arranged rotatablyA This inemsupported tubular member 66. ber is rotatably supported in any suitable manner, such as by means of the bearings 67. The lower end ofthe tubular member 66 carries a ibevel pinion 68 meshing;v with thebevelgear 6l; and `its upper end is adapted to support'the tool or cutter 50. 'lhe casingl 65,765@ carries at its other end a. similar rotatable member 76 adapted to hold at its upper end, asshown', the tool or cutter 5l. TheV membersM 66 and 76 are providedwith meshing pinions 66u and 76a, respectively, whereby rotationof the member 66 will rotate'the i memberY 76'.

Ashasbeen stated, thefcasing 65, 65 is rotatably? mounted'on they casing 60. This rotation'isprovided'for in the following manner: The casing 60 has an upwardly projecting;cylindricalpart SO concentrically arranged with respect to the member 66. The part SO is provided with a circular fla-nge or shoulder 8l?.V The. casing 65, 65a fits-*over the part' S0 and'has an inwardly turned edge 83 projecting under the shoulder" 81d; Rotation of the casing 65, 65u' is therefore',Y permitted about the axis of the m'em'ber 66 asa center; Rotation'of the cas ingr inlthis way causes revolution ofthe cutlterbl about the cutter 5() as a center;

Tn' order to prevent the rentire routine; mechanism fromy turning' around with the s'haftvlS, theicasing 60a' is provided with a short' offset arm 87, which is attached to' the carriage'l` by means of the machine screw 88:1 By means'of' this construction, it' will be notedthat rotation ofthe shaft 1S, operatin'g'through the bevel gears 6l and'68, will rotate'th'e cutting. tool 50.' 4Rotation of the partw66, operatingthrough the pinions 662L and#4 762, willi serve to rotate the: cutting tool 51.

tf Will be seen that' if a board or other work is placed on top of. the table lying across the-slot lf and the tools 50 andf 5l rotated' and the carriage 16 moved onits tracks, thecu'tting tools lwill engage the work andmake a groove across it. If the `two tools and' 51' move in coincident paths, it is obv'iousthat"theigroove'would have parallel sides. If, however, the tool 51 is-rev'olvedE around the tool 5011s the carriage ismov'e'd, the groove will be tapered dependirrguponvthe rate of revolution of the tool I" have stated that the groove would be tapered,` although morelaccurately it should b'en'otedrt'hat'with the device made exactly straight side of the groove. Sincethe arc thus described will be almost straight, the groove would be substantially a tapered groove. Tfdesired, the speed of revolution of `the tool 5l could be calculated so that ay ,groove with perfectly straight tapered sides Twould be formed. This could be done by making` the guide 90 (to be hereinafter described more in detail) of the proper curvature;

will nov: describe in detailv the means by which the desired revolutionof the cutting;` tool 5l4 is accomplished during' the reciprocation of the carriage 16 in order to make a tapere lproove- On the undersideof he table section ll is fastened a guide or l track 96: This track or guide 90 is'pivotally The swinging endis pro'- videda ith an arm 96 having' anarcuate slot Q7. A; machine screw 9S extends through the slot 9T' into the bottom of the table top.

Py this Constr-action the guide 9() may be `adyusted as desired in order to adjust the `amount rof revolutiton given to the cutter 5l during the travel of the carriage. It is obvious also that if desired the raceway il() could be made with the curvature desired in order togive any desired formation to the groove cut" in the work. Forexample', the guideQO could be curved so that the cutters 5l and 50will make a tapered groove with strai it sides. The casingG"L isfprovided ivith'an arm` 1107,-'liaving on one'endy a'friction roller 106 which movies Within the guide 96- to cause rotationy of the tool 5l about the tool: 50, in accordance with the settine; or adjustment of the guide 90.

For the purpose of; illustration, merely, l have shown here the tool'l (see Fig. 3*) asenlarged at the end in order to form'an undercutV andy have shown the tool 50 as having straightI sides.r Tt is perfectly obvious that, without detracting from the spirit or" this invention', one or both tools mayy be straight or undercut, or they may be varied-ask desired in order to give any desired kindand depth of eut.y Y

It is to' be noted that the entire routing i mechanismA canbe easily and quickly deroutingmechanism may then be lifted ol andthe regular saw placed on the mandrel.

`While I have shown anddescribedi certain embodiments' of my invention, itisft'o be understood that it is capable ofimany: modiications'. Changes, therefore, Vin' the construction and arrangement' may 'he made Without departing from the spirit' and* scope 'ofthe invention as disclosed injtheappended claims, in which/it' is .my intention to claim all novelty inherent in my inventionv as broadly as possible in viewot theprior' art.

wWhat I vclaim las new and desire to secure by Letters lPatent7 is:y i 1. A routing mechanism comprising two cutting tools, means for rotating the cutting toolsj means for reciprocating said cutting toolswhile rotating7 and means for revolving one of said cutting tools about the otherv anism detach-ably secured to said carriage,

said routing mechanism comprising two ro# tatably supported cutting tools so mounted as to permit one of said cutting tools to be revolved about the other as an anis.

4. A routing mechanism` adapted for ate tachment to the sliding carriage of a saw machine, said sliding mechanism comprising two cutting tools rotatably supported so as to permit one of said cutting tools to be revolved about the other as an axis during rotation of the same. l

5. A routing mechanism comprising a casing having rotatably supported therein two cuttingtools,1one of said cutting tools adapted to be revolved about the other as a center during rotation of the same. i

6. A routing mechanism comprising a cutting y casing having rotatably supported therein two cutting tools, one of said cuttingtools means for so revolving 'said cutting tools.

7. Avrouting mechanism comprising a. casing having rotatabiy` supported therein twoy cutting tools,.one of said cutting tools adapted to be revolved about the other as" i y a center7 means for rotating the cutting tools, lmeans for lreciprocating vthe routing mechanism, and means for revolving one of the cutting tools about the other as a center during reciprocation. l n

kv8. A routing mechanism comprising a casing having rotatably supported thereiny `adapted to be revolved about the other'as a rcenter during rotation of the same, andV two cutting tools, one of said cuttingtools adapted to be revolved about the other as ka center, means for rotatingthe cutting tools,vmeans for reciprocatingY the routing mechanism, and means for revolving one of the cutting tools about the other as a center during reciprocation, said means coniprising -an adjustable guide'rand ank arm on the routing mechanism having one end operating in said guide.

9.y A routing mechanism comprising a casing having rotatably supported therein ,y

two cutting tools7 f one adapted to be re' 'Kvolved about the other ras a center7 and means for controlling said. revolution.

l0. A routing mechanism` comprising a casing having rotatably supported therein two cutting tools, one adapted to be revolved about the other while both are being rotated, andmeans for controlling said revolution.

f EDWARD A. LAUGHLIN. f 

